Love Star Defender 3? Want more missions and cruel enemies? Here you go! Star Defender 4 is to give you all the new fun again! Tons of new weapons and alien beasts are waiting for you! This is going to be a very hot battle but you are not a beginner in this war… You have already proved yourself as a professional pilot. You saved the Earth and became a hero. The new war is just a good chance to have fun! :)